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2,107 results for “Spectrum”
DVB-T Spectrum Sensing for Federated Learning
<p>These files contain measurement results achieved in the following scenario:<br>Rohde&Schwarz SMBV100A signal generator transmits OFDM signal (center frequency 2000.0 MHz) with different amplifier gain.<br>A single PC with GNU Radio and connected USRP receives a signal with a central frequency of 2000 MHz (filtered 8 MHz bandwidth). <br><br>Received is set in six different positions (location of sensors presented on the figure "position.png") - creating 6 files - and collects data to detect the presence of a transmitted signal. Data that can be found in the files is stored in CSV format to be easily analyzed in ML models. </p> <p>Data collected during this experiment contains:<br>- column with average received power in the analyzed channel (in mW)<br>- column with autocorrelation value<br>- column with decision metric (calculated as maximum eigenvalue divided by minimum eigenvalue - look below)<br>- 8 columns with eigenvalues of the Pearson correlation matrix (8 subsequent vectors of 32768 samples)<br>- column with information about signal transmission (label; 0 - noise, 1 - signal transmitted)</p>
Full electronic tables for 'Spectrum and energy levels of the high-lying singly excited configurations of Nd III'
<p>Full electronic versions of table extracts of the accepted version of the preprint at <a href="https://doi.org/10.48550/arXiv.2408.07830">https://doi.org/10.48550/arXiv.2408.07830</a></p>
Linked collectors and determiners for: Geosesarma spectrum, a new species of semiterrestrial vampire crab (Crustacea: Decapoda: Brachyura: Sesarmidae) from Brunei Darussalam, Borneo.
Natural history specimen data linked to collectors and determiners held within, "Geosesarma spectrum, a new species of semiterrestrial vampire crab (Crustacea: Decapoda: Brachyura: Sesarmidae) from Brunei Darussalam, Borneo". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/fd229573-d281-4c7a-a9cc-86e8cf041c60">https://bionomia.net/dataset/fd229573-d281-4c7a-a9cc-86e8cf041c60</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/fd229573-d281-4c7a-a9cc-86e8cf041c60">https://gbif.org/dataset/fd229573-d281-4c7a-a9cc-86e8cf041c60</a>. Formatted as a Frictionless Data package.
Spectrum-Based Feature Localization: A Case Study using ArgoUML
<p>ArgoUML dataset used in the paper: "Spectrum-Based Feature Localization: A Case Study using ArgoUML".</p> <p>This enables reproducibility, evaluation, and comparison of our study.</p> <p>In the folder ArgoUML you will find: </p> <ul> <li><em>ArgoUML_Tests_Annotated</em>. This folder contains the variants used for running test cases and obtaining execution traces from the test scenarios.</li> <li><em>BenchmarkTracesComparison</em>. This folder contains the results metrics with the granularity of the ArgoUML benchmark (see Martinez et al., 2018. https://doi.org/10.1145/3233027.3236402) and the execution traces from manual and test cases for each feature from previous work (see Michelon et al., 2021. https://doi.org/10.1145/3442391.3442403).</li> <li><em>VariantsSourceCodeComparison. </em>This folder contains the results metrics with the granularity at the method- and line-level and execution traces from manual and test cases for each feature from previous work (see Michelon et al., 2021. https://doi.org/10.1145/3442391.3442403).</li> </ul>
Comparative transcriptomics of tropical woody plants supports fast and furious strategy along the leaf economics spectrum in lianas
<p>Lianas, climbing woody plants, influence the structure and function of tropical forests. Climbing traits have evolved multiple times, including ancestral groups such as gymnosperms and pteridophytes, but the genetic basis of the liana strategy is largely unknown. Here, we use a comparative transcriptomic approach for 47 tropical plant species, including ten lianas of diverse taxonomic origins, to identify genes that are consistently expressed or downregulated only in lianas. Our comparative analysis of full-length transcripts enabled the identification of a core interactomic network common to lianas. Sets of transcripts identified from our analysis reveal features related to functional traits pertinent to leaf economics spectrum in lianas, including upregulation of genes controlling epidermal cuticular properties, cell wall remodeling, carbon concentrating mechanism, cell cycle progression, DNA repair and a large suit of downregulated transcription factors and enzymes involved in ABA-mediated stress response as well as lignin and suberin synthesis. Altogether, these genes are known to be significant in shaping plant morphologies through responses such as gravitropism, phyllotaxy and shade avoidance.</p>
Data for "Excitation Spectrum and Superfluid Gap of an Ultracold Fermi Gas"
<p>This upload includes data shown in the main text and the supplementary material of the paper "Excitation Spectrum and Superfluid Gap of an Ultracold Fermi Gas", <a href="https://arxiv.org/abs/2105.09820">arXiv:2105.09820</a></p>
An Extreme Ultraviolet Spectrum of a Coronal Loop Footpoint (from Landi & Young 2009)
<p>This record contains a spectrum from the Hinode EUV Imaging Spectrometer (EIS) that was analyzed by Landi & Young (2009, ApJ, 706, 1) and Young & Landi (2009, ApJ, 707, 173). The spectrum was shown in Figures 2-5 of Landi & Young (2009). The items are:</p> <p>sw_spectrum.txt - Spectrum from the EIS short wavelength (SW) channel [format: ASCII]</p> <p>lw_spectrum.txt - Spectrum from the EIS long wavelength (LW) channel [format: ASCII]</p> <p>mask.fits - A FITS file containing a 2D bitmap image that shows the spatial pixels that were averaged to yield the spectrum. The mask applies to the wavelength 194.66 angstroms.</p> <p>The spectra are created from the EIS data file beginning at 01:12 UT on 21-Feb-2007. After calibrating the dataset to level-1, the spectra are generated from the pixel mask using the IDL routine eis_mask_spectrum.pro that is available in the Solarsoft library. Further details about this software are available in EIS Software note 16, which is also available in Solarsoft.</p> <p>The Hinode data are publicly available through the Virtual Solar Observatory (https://sdac.virtualsolar.org/).</p> <p>The Solarsoft library is also publicly available at https://www.lmsal.com/solarsoft/.</p> <p>The spectrum is described at https://iopscience.iop.org/article/10.1088/0004-637X/706/1/1.</p> <p> </p>
Fig. 2 in Food spectrum and trophic structure of the ichthyofauna of Corumbá reservoir, Paraná river Basin, Brazil
Fig. 2. Food resource availability, inferred from the volume of food items in the stomachs analyzed for all species combined.
dataset related to article "Multiple Genetic Rare Variants in Autism Spectrum Disorders: A Single-Center Targeted NGS Study"
<p>dataset contains: NGS data (.vcf; .bam; .bam.bai) of all 40 ASD patients analysed in the study at title</p>
Effects Of Atmospheric Attenuation On The Lightning Spectrum
<p>Spectrum carries important information reflecting atomic and molecular processes inside a light source. Accurate spectral diagnosis is vital in revealing the microscopic physical mechanism of the lightning discharge process. Spectral correction was applied considering the influence of atmospheric attenuation, grating efficiency, and camera response on the observed spectrum, thereby solving the problems of atmospheric attenuation in long distance lightning spectrum observations. Based on the restored spectrum, the temperature of the lightning return stroke channel was calculated by the ionic and atomic lines respectively. The result showed that corrected temperature at the initial stage of the return stroke, calculated by the ionic line, could reach up to 40,000 K, which was about 10,000 K higher than the values directly obtained from the observed spectrum. Atmospheric attenuation of the atomic spectral line in the nearinfrared band is relatively weak; therefore, atmospheric attenuation was inferred to have a relatively less effect on the channel temperature that was calculated by the atomic spectral lines. This work provided the attenuation ratio of the characteristic lines in lightning spectra with distance, and can used for more precisely quantitative investigation on the physical characteristics of the lightning process. It also has application value for improving the spectral diagnostic techniques on celestial body and other natural luminous process.<br> </p>
UPLC-QTOF data from a river sample extracted with various solid phase extraction phases - mz5 files with scans in centroid spectrum format
<p>This dataset has been acquired from a river sample (Marne River, France) collected as part of the Screenatm'eau project (Observatoire des Sciences de l’Univers - Enveloppes FLUides de la Ville à l’Exobiologie - OSU-EFLUVE, Université Paris-Est Créteil). The sample was processed by solid-phase extraction using multiple cartridges and phases, in triplicates (see the list of samples in the samplemetadata.csv file).</p> <p>Data was acquired with a SYNAPT HDMS QTOF (Waters) coupled with a Nano ACQUITY UPLC System (Waters), in ESI positive mode. Raw data was converted using Proteowizard MSConvert version 3.0.21288, using zlib compression, with the CWT peakpicking algorithm (snr=0, peakSpace=0) to transform profile to centroid data, and the zeroSamples option (removeExtra 1-). The chosen output formats were .mzML and .mz5.</p> <p>A list of markers was obtained after peak picking and alignment across all samples using the PatRoon R package with the OpenMS algorithm, and exported as a markertable.csv file. Each detected marker has m/z and retention time values (see the variablemetadata.csv file), and intensity values in all samples (markertable.csv).</p> <p>For file naming explanation and details about each SPE phase, see the readme.txt file.</p>
X-ray spectrum of Torus Wedges
<p>In Buchner et al. (in prep) computations of a X-ray obscurers of AGN are presented. The files show the wedge torus.</p> <p>See https://github.com/JohannesBuchner/xars for more information.</p>
X-ray spectrum of radiative fountain model
<p>In Buchner et al. (in prep) computations of a X-ray obscurers of AGN are presented. This geometry is a snapshot of the radiative fountain model (Wada 2012, Wada et al. 2016).</p> <p>See <a href="https://github.com/JohannesBuchner/xars">https://github.com/JohannesBuchner/xars</a> for more information.</p>
Fig. 3. Chrysis spectrum Wickar, 1908 in Preliminary revision of the Indian cuckoo wasp genera Trichrysis Lichtenstein, 1876 and Chrysidea Bischoff, 1910, with description of a new species (Hymenoptera, Chrysididae)
Fig. 3. Chrysis spectrum Wickar, 1908, ♀, lectotype (NHMUK). A. Habitus, lateral view. B. Habitus, posterior view. Scale bars: 1.0 mm.
Cosmological Initial Conditions (3D magnetic fields for an alfa=1.0 magnetic spectrum) for 85Mpc^3
<p>Files representing the initial conditions at z=40 for ENZO-MHD cosmological simulation of a comoving 85Mpc^3 volume, for tangled magnetic fields from an alfaB=-1.0 initial spectrum of magnetic fluctuations. The simulation has 1024^3 cells and 1024^3 DM particles. These data are in binary format and can be read by the ENZO code.</p> <p>More details of the simulations and on it cosmological parameter can be found at:</p> <ul> <li>https://ui.adsabs.harvard.edu/abs/2021Galax...9..109V/abstract</li> <li>https://ui.adsabs.harvard.edu/abs/2021MNRAS.500.5350V/abstract</li> <li>https://ui.adsabs.harvard.edu/abs/2017CQGra..34w4001V/abstract</li> </ul>
Cosmological Initial Conditions (3D magnetic fields for an alfa=1.0 magnetic spectrum) for 85Mpc^3
<p>Files representing the initial conditions at z=40 for ENZO-MHD cosmological simulation of a comoving 85Mpc^3 volume, for tangled magnetic fields from an alfaB=1.0 initial spectrum of magnetic fluctuations. The simulation has 1024^3 cells and 1024^3 DM particles. These data are in binary format and can be read by the ENZO code.</p> <p>More details of the simulations and on it cosmological parameter can be found at:</p> <ul> <li>https://ui.adsabs.harvard.edu/abs/2021Galax...9..109V/abstract</li> <li>https://ui.adsabs.harvard.edu/abs/2021MNRAS.500.5350V/abstract</li> <li>https://ui.adsabs.harvard.edu/abs/2017CQGra..34w4001V/abstract</li> </ul>
Cosmological Initial Conditions (3D magnetic fields for an alfa=2.0 magnetic spectrum) for 85Mpc^3
<p>Files representing the initial conditions at z=40 for ENZO-MHD cosmological simulation of a comoving 85Mpc^3 volume, for tangled magnetic fields from an alfaB=2.0 initial spectrum of magnetic fluctuations. The simulation has 1024^3 cells and 1024^3 DM particles. These data are in binary format and can be read by the ENZO code.</p> <p>More details of the simulations and on it cosmological parameter can be found at:</p> <ul> <li>https://ui.adsabs.harvard.edu/abs/2021Galax...9..109V/abstract</li> <li>https://ui.adsabs.harvard.edu/abs/2021MNRAS.500.5350V/abstract</li> <li>https://ui.adsabs.harvard.edu/abs/2017CQGra..34w4001V/abstract</li> </ul>
Data from: Biodiversity–ecosystem function relationships change in sign and magnitude across the Hill diversity spectrum
<p>Motivated by accelerating anthropogenic extinctions, decades of biodiversity–ecosystem function (BEF) experiments show that ecosystem function declines with species loss from local communities. Yet, at the local scale, changes in species' total and relative abundances are more common than species loss. The consensus best biodiversity measures are Hill numbers, which use a scaling parameter, ℓ, to emphasize rarer versus more common species. Shifting that emphasis captures distinct, function-relevant biodiversity gradients beyond species richness. Here, we hypothesized that Hill numbers that emphasize rare species more than richness does may distinguish large, complex and presumably higher functioning assemblages from smaller and simpler ones. In this study, we tested which values of ℓ produce the strongest BEF relationships in community datasets of ecosystem functions provided by wild, free-living organisms. We found that ℓ values that emphasized rare species more than richness does most often correlated most strongly with ecosystem functions. As emphasis shifted to more common species, BEF correlations were often weak and/or negative. We argue that unconventional Hill diversities that shift emphasis towards rarer species may be useful for describing biodiversity change, and that employing a wide spectrum of Hill numbers can clarify mechanisms underlying BEF relationships</p> <p>This article is part of the theme issue ‘Detecting and attributing the causes of biodiversity change: needs, gaps and solutions’.</p>
Supplementary material - Full-spectrum CARS Microscopy Of Cells And Tissues With Ultrashort White-light Continuum Pulses
<p>Supplementary material containing the raw Broadband CARS data presented in the manuscript entitled "Full-spectrum CARS Microscopy Of Cells And Tissues With Ultrashort White-light Continuum Pulses".</p>
Galactic Diffuse Emission Spectrum between 0.5 and 8.0 MeV and between 30 keV and 8 MeV for the search of PBH and Light Dark Matter
<p>Spectra and response files of the soft gamma-ray spectrum from Inverse Compton scattering in the Milky Way between 0.5 and 8.0 MeV, measured with INTEGRAL/SPI. The fluxes have been extracted with spimodfit assuming GALPROP v56 models according to Voyager 1, AMS-02, and Fermi/LAT data, plus different variants to change the interstellar radiation field, the diffusion properties, or the cosmic-ray halo size (<a href="https://ui.adsabs.harvard.edu/abs/2022A%26A...660A.130S/abstract">Siegert et al., 2022</a>). The respective galdef files are included. In particular:</p> <ul> <li>voyager: propagation model of Bisschoff et al. (2019), Table 2</li> <li>voyager_Dg10001: <span class="math-tex">\(\delta_1 = 0\)</span></li> <li>voyager_Dg1Dg205: <span class="math-tex">\(\delta_1 = \delta_2 = 0.5\)</span></li> <li>voyager_ISRFopt10: factor 10 stronger optical ISFR</li> <li>voyager_z8kpc_KL: thick halo with 8 kpc half-thickness</li> </ul> <p>In addition, there are spectra from 30 keV to 8 MeV (spec_0030-8000keV_<name>.fits, <a href="https://ui.adsabs.harvard.edu/abs/2022PhRvD.106b3030B/abstract">Berteaud et al., 2022</a>), separated into:</p> <ul> <li>CV: spectrum of unresolved point sources in the Galactic plane, mostly cataclysmic variables (strong systematics)</li> <li>IC: spectrum of Inverse Compton scattering of cosmic ray GeV electrons (see above)</li> <li>positronium: spectrum of positronium decay (annihilation of electrons with positrons after intermediate bound state)</li> <li>NFW: spectrum of dark matter contributions that would follow a Navarro Frenk White density profile (mostly consistent with zero)</li> <li>total: spectrum of the above combined</li> </ul> <p>The notebooks for dark matter related bounds when using this data as well as auxiliary files to create the templates are given as (<a href="https://ui.adsabs.harvard.edu/abs/2022PhRvD.106b3030B/abstract">Berteaud et al., 2022</a>, <a href="https://ui.adsabs.harvard.edu/abs/2023MNRAS.520.4167C/abstract">Calore et al., 2023</a>):</p> <ul> <li>DM_fsr.ipynb: Notebook for final state radiation bounds</li> <li>DM_fsr.py: astromodels function for final state radiation spectrum</li> <li>DM_2gamma.ipynb: Notebook for gamma gamma final state bounds</li> <li>DM_2gamma.py: astromodels function for gamma gamma spectrum</li> <li>Positronium_Spectrum.py: astromodels function for Positonium spectrum</li> <li>DM_pbh.py: script for obtaining PBH bounds</li> <li>diff_@@.csv: spectra for PBH evaporation</li> <li>total_spectrum.fits.gz: total Galactic spectrum</li> <li>NFW_spectrum.fits.gz: NFW-only spectrum</li> </ul>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.